I'm doing my best not to be excited for Mists of Pandaria yet. This is partly because we've not even seen a hint of the beta starting yet and thus have a few more months of patch 4.3 to play before MoP comes out. This is also partly due to the fact that my new guild just started heroic Spine of Deathwing attempts, and I'm not sure I'm ever going to look forward to anything ever again. Ever.
Even though I'll never be excited for anything ever again, Blizzard has released some juicy new MoP information over the past two weeks, and a good chunk of it pertains to enhancement shaman. If you still have the ability to be excited for things, this something you want to read. If you're also progressing on heroic Spine of Deathwing, you probably still want to read this ... if only to know that there is a light at the end of the tunnel.